The Federal Circuit held a patent invalid under the 35 U.S.C. § 102(b) on-sale bar test of Pfaff because (1) the invention was ready for patenting, based on a declaration by the inventor that the invention was “reduced to practice,” and (2) the invention was the subject of a commercial sale, based on the fact that testers were invoiced for calls made during beta testing, prior to the critical date.